Earlier this month he posted a 2,100 word rant on social media claiming that the modern Australian diet is behind the rise in autism.

Relaxed: With a blue and white striped towel wrapped around his waist, My Kitchen Rules judge Pete walked along the shore barefoot

Dedicated dad: Proving to be quite the dedicated dad, Pete was later seen holding onto his daughters' towels as the family neared a little rock pool

'Why has our rate of autism jumped from 1 in 10000 children in 1974, to 1 in 50 in 2014, where do you think it will be in another 40 years if it is escalating at this rate? This has grown rapidly since the guidelines have been in place!' Evans wrote.

Prior to that, he took aim at the Heart Foundation and the Dietitians Association of Australia (DAA) as he promoted the 'benefits ' of the paleo diet.

His fiery rant challenged the idea of the Heart Foundation's tick and also questioned some of the beliefs held by the DAA - both of which have spoken out against the paleo diet.

Attentive: The bright coloured pink and yellow towels with cute floral prints were worn around Pete's neck as he kept a close eye on the water

Keeping a low profile: Both Pete and Nicky decided to wear a pair of dark sunglasses during the day